On Sun, 2020-11-22 at 17:17 +0200, Aya Levin wrote:

On 11/22/2020 1:58 AM, Jakub Kicinski wrote:

quoted

On Fri, 20 Nov 2020 15:03:32 -0800 Saeed Mahameed wrote:

quoted

From: Aya Levin <redacted>

Expose FW indication that it supports stateless offloads for IP
over IP
tunneled packets per direction. In some HW like ConnectX-4 IP-in-
IP
support is not symmetric, it supports steering on the inner
header but
it doesn't TX-Checksum and TSO. Add IP-in-IP capability per
direction to
cover this case as well.

What's the use for the rx capability in Linux? We don't have an API
to
configure that AFAIK.

Correct, the rx capability bit is used by the driver to allow flow 
steering on the inner header.

Currently we use the global HW capability to enable flow steering on
inner header for RSS. in upcoming patch to net-next we will relax the
dependency on the global capability and will use the dedicated rx cap
instead.